<!DOCTYPE html>
<html>
<head>
<style>
.container {
  position: absolute;
  top: 100px;
  left:100.5px;
}

#target {
  position: absolute;
  left: 0px;
  width: 10px;
  height: 10px;
  border: 2px solid green;
}
</style>
</head>
<body>
<div class="container">
<div id="target">
</div>
</div>
